Am 05.11.2013 16:34, schrieb Leif Hedstrom: > On Nov 5, 2013, at 12:01 AM, Omid Kosari <[email protected]> wrote: > >> I am trying to test ATS performance . In a normal test i checked several urls >> with three browsers and looking in /var/log/trafficserver/squid.log . >> for example i loaded following url one time with firefox , another time with >> google chrome and another time with IE . >> http://upload.wikimedia.org/wikipedia/commons/2/28/Clouds_Blue_Sky_001.jpg > > A guess would be that you get hit by this: > > https://issues.apache.org/jira/browse/TS-2245 > > I just landed this on master, so give it a test. You would need to set the > configs to “2” for it to be safe. What I suspect happens in your case is that > the various browsers are differing on what they send for Accept-Language: or > one of the other Accept-* headers. > > I’m thinking for v5.0.0, we want to make at least these three configurations > the default: > > CONFIG proxy.config.http.cache.ignore_accept_language_mismatch INT 2 > CONFIG proxy.config.http.cache.ignore_accept_encoding_mismatch INT 2 > proxy.config.http.cache.ignore_accept_charset_mismatch INT 2 > > There are use cases for both the “0” setting and the “1” setting, but the > most sane behavior IMO is the above. > But we can’t make this change in the v4.x release cycle, since it’s > technically an incompatible configuration change > (it does change the behavior)
i am not sure now if 2 is still supported and only the default will change looking at the description and my explicit origin-config "2" will ineed be the best option because i remove "Vary" explicit for static files and for extensions which are handeled with mod_deflate after hat add a vary for "Accept-Encoding" currently the settings are at "1" here because "Cache-Control: public, proxy-revalidate" and ETAG-headers on each dynamic page, but "2" would be perfect * images are never gzip-compressed -> only one version needs to be cached * static documents which may be compressed -> Vary on encdoing but not user-agent * php-files -> Vary: Accept-Encoding,User-Agent because they may generate different content ___________________________________________________________________ I'm thinking we could turn the existing configuration options to trie-state configs: 0 - Client header is used / honored even in the absence of Vary: header from origin (this is default behavior) 1 - Client header is never used when performing the default alternate selection. 2 - Client header is not used in alternate selection if there is no Vary: from origin specifying to use it ___________________________________________________________________ # Properly handle requests behind proxies <IfModule mod_headers.c> <FilesMatch "\.(php)$"> Header append "Vary" "User-Agent" </FilesMatch> <FilesMatch "\.(gif|jpe?g|png|htm|html|xml|sgm|sgml|css|js|txt|htc|ico|flv|mp4|m4v|wmv|mov|mpg|ogv|webm|mp3|wav|ogg|oga|swf|doc|docx|xls|xlsx|ppt|pptx|pdf|eot|ttf|otf|woff)$"> Header unset "Vary" </FilesMatch> <FilesMatch "\.(htm|html|xml|sgm|sgml|css|js|txt|htc|wav|doc|docx|xls|xlsx|ppt|pptx|pdf|eot|ttf|otf|woff)$"> Header set "Vary" "Accept-Encoding" </FilesMatch> </IfModule>
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